Novak Djokovic of Serbia stunned world number one Rafael Nadal of Spain 6-4, 6-4 to win the Rome Masters tennis championship. The victory yesterday took Djokovic's unbeaten start to 2011 to 37 matches .Djokovic has won all seven tournaments he's played this year, including the Australian Open, and tennis watchers now consider him as favourite going into the French Open which starts next Sunday.